Fulltext TSBs

Technical Service Bulletins

TSB
98-8-10
  • TRAILER WIRING – CONVERTING A 4-WAY TRAILER CONNECTOR SYSTEM TO A 7-WAY HEAVY DUTY SYSTEM – SERVICE TIP
Publication Date: APRIL 27, 1998

LIGHT TRUCK:
1996-1997 F-250 HD, F-350
1999 SUPER DUTY F SERIES

ISSUE:

Some customers may require a heavy duty 7-way trailer wiring connector system when the vehicle is equipped with a 4-way connector.

ACTION:

Install a heavy duty trailer tow relay package and trailer tow wiring into the vehicle. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

  1. Locate the light duty 4-way trailer tow assembly which is mounted on the rear bumper or frame.
  2. Disconnect the mounting bracket from the bumper or frame and retain the mounting bracket screw.
  3. Disconnect the 4-way black connector interconnect that is retained with a Christmas tree from the -14405- frame wire. Refer to Figure 1 or 2.


    Figure 1 – Article 98-8-10




    Figure 2 – Article 98-8-10

  4. Install the new Wire Assembly (F6TZ-13A576-BA) by connecting the two (2) 4-way connectors (black and gray) to the matching connectors on the -14405- wire harness. Retain the wire as shown in Figure 1 or 2.
  5. Reattach the 7-way trailer tow mounting bracket using the same mounting bracket screw that was removed in Step 2. Torque the screw to 25 4 N-m (18 3 lb-ft).
  6. Locate the power distribution box in the engine compartment.
  7. Install the heavy duty trailer relay wire assembly. Refer to the drawing provided with the relay assembly for exact details.
  8. Connect the two (2) 4-way connectors to the -14405- and -12A581- wire assemblies as shown in Figure 3. Make sure the gray and black connectors match together. The connectors have a Christmas tree that should be attached to the fender apron as shown in Figure 3.


    Figure 3 – Article 98-8-10


PART NUMBERPART NAME
F4TZ-14A346-ARelay Block
F6TZ-13A576-BAWire Assembly
F6TZ-15A416-AATrailer Tow Kit
N801817-S55Relay Block Mounting Screw
N806820-S55Mounting Bracket Screw

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Information Only

OASIS CODES:

201000, 201200, 203000, 203200, 205000


Copyright 1998 Ford Motor Company